Statistical Investigation on the Temperature Actions of CFST Truss Based on Long-Term Measurement

桁架 结构工程 拱门 有限元法 跨度(工程) 工程类 桁架桥 期限(时间) 数学 物理 量子力学
作者
Jiang Liu,Yongjian Liu,Xinkai Yan,Guojing Zhang
出处
期刊:Journal of Bridge Engineering [American Society of Civil Engineers]
卷期号:26 (8) 被引量:2
标识
DOI:10.1061/(asce)be.1943-5592.0001740
摘要

Concrete-filled steel tube (CFST) trusses are the most common elements used in long-span CFST bridges; however, the temperature actions have not been systematically investigated. This paper presents a long-term temperature measurement on a CFST truss segment and decompose its temperature actions into uniform temperature, vertical temperature difference (VTD) between upper and lower chords, and lateral temperature difference (LTD) between left and right chords. Based on the recorded long-term meteorological data, empirical formulae were established to predict these temperature actions and prove with a high degree of confidence. Subsequently, an effective extreme value analysis (EVA) based on the Monte Carlo method was presented to calculate the representative values of these temperature actions. All these values are greater than the recommended values in the Chinese Code Specification. Based on a series of frequency analysis on each temperature action, three potential combinations were finally determined. The combinations were all input into a frame finite-element model of a 220 m span CFST arch bridge for the thermal response calculation and comparisons with the Specification temperature actions and dead load. These efforts suggest that the investigative methodology and the proposed temperature action combinations can expand the provisions of the Chinese Code Specification and are more suitable for the thermal response calculation and design of CFST arch bridges with a truss arch rib.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
yyuu完成签到,获得积分10
刚刚
1秒前
2秒前
2秒前
2秒前
sisi完成签到,获得积分20
2秒前
打打应助我晕豆芽采纳,获得10
2秒前
3秒前
3秒前
4秒前
721发布了新的文献求助10
5秒前
junjie发布了新的文献求助30
5秒前
Archy发布了新的文献求助10
5秒前
谢建国发布了新的文献求助10
5秒前
fjejj完成签到,获得积分10
6秒前
neon发布了新的文献求助10
7秒前
迷路博完成签到,获得积分10
7秒前
8秒前
8秒前
毛毛发布了新的文献求助10
9秒前
11秒前
12秒前
阳光沛柔发布了新的文献求助10
12秒前
YYYZZX1完成签到,获得积分10
13秒前
英俊的铭应助Ljc采纳,获得10
13秒前
Rondab应助杜兰特工队采纳,获得30
14秒前
14秒前
14秒前
14秒前
隐形曼青应助yuanyuan采纳,获得10
14秒前
15秒前
nini发布了新的文献求助10
16秒前
思源应助zxunxia采纳,获得10
18秒前
18秒前
18秒前
18秒前
19秒前
量子星尘发布了新的文献求助30
19秒前
XYN1发布了新的文献求助10
19秒前
直立行走完成签到,获得积分10
19秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988920
求助须知:如何正确求助?哪些是违规求助? 3531290
关于积分的说明 11253247
捐赠科研通 3269903
什么是DOI,文献DOI怎么找? 1804830
邀请新用户注册赠送积分活动 882027
科研通“疑难数据库(出版商)”最低求助积分说明 809052